Cisco UBR904 Troubleshooting Guide - Page 25

show controllers cable-modem des Table 4 Show Controllers Cable-Modem DES Field Descriptions Field ds_des_key_table ds_des_cbc_iv_table ds_des_sid_table ds_des_sid_enable ds_des_ctrl ds_des_sv ds_unencrypted_length us_des_key_table us_des_cbc_iv_table us_des_ctrl Description Table showing downstream DES keys. Table of downstream DES Cipher Block Chaining mode information. Table showing the SID values to be enabled for DES encryption. Controls which SID entries in the SID table are enabled for encryption. In the above example, none of the entries are enabled for encryption. Control register that controls the operating mode of the downstream DES engine. DES security version register; the range of the version field in Baseline Privacy interface (BPI) extended headers that will be accepted by the hardware. High byte is upper limit, low byte is lower limit. The uBR904 will accept versions 0 to 15. Specifies the number of bytes that will be unencrypted at the beginning of the MAC frame. 0x0C means the first 12 bytes are not encrypted, which is what the DOCSIS Baseline Privacy specification calls for. Table showing upstream DES keys. Table of upstream DES Cipher Block Chaining mode information. Control register that controls the operating mode of the upstream DES engine. The value 0x24 means that the upstream is configured to enable decryption and to use CBC mode Related Commands show controllers cable-modem show controllers cable-modem bpkm show controllers cable-modem filters show controllers cable-modem lookup-table show controllers cable-modem mac show controllers cable-modem phy show controllers cable-modem tuner Troubleshooting Tips for the Cisco uBR904 Cable Modem 25